该系列是一种阀板为部分球面的偏心角行程调节阀，与球型调节阀相比较，具有小型量轻、阀容量大、可调比高等特点。

This series provides eccentric segmental ball valves for modulating application. Comparing to globe valves, the body is compact, light weight, and yet it has large Cv value and large rangeability.